package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Service;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.dao.PermissionDao;
import com.itheima.dao.Role_kDao;
import com.itheima.dao.User_kDao;
import com.itheima.entity.PageResult;
import com.itheima.entity.QueryPageBean;
import com.itheima.pojo.Permission;
import com.itheima.pojo.Role;
import com.itheima.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * 用户服务
 */
@Service(interfaceClass = User_kService.class)
@Transactional
public class User_kServiceImpl implements User_kService {
    @Autowired
    private User_kDao userDao;
    @Autowired
    private Role_kDao roleDao;
    @Autowired
    private PermissionDao permissionDao;
    //根据用户名查询用户信息,包括用户的角色和角色关联的权限
    public User findByUsername(String username) {
        User user = userDao.findByUsername(username);//根据用户名查询用户表
        if(user == null){
            return null;
        }
        Integer userId = user.getId();
        //根据用户id查询关联的角色
        Set<Role> roles = roleDao.findByUserId(userId);
        if(roles != null && roles.size() > 0){
            //遍历角色集合，查询每个角色关联的权限
            for (Role role : roles) {
                Integer roleId = role.getId();//角色id
                //根据角色id查询关联的权限
                Set<Permission> permissions = permissionDao.findByRoleId(roleId);
                if(permissions != null && permissions.size() > 0){
                    //角色关联权限集合
                    role.setPermissions(permissions);
                }
            }
            //用户关联角色集合
            user.setRoles(roles);
        }

        return user;
    }

    //新增用户
    public void add(User user, Integer[] roleIds) {
        userDao.add(user);
        Integer id = user.getId();
        if (roleIds != null && roleIds.length > 0) {
            for (Integer roleId : roleIds) {
                Map<String, Object> map = new HashMap<>();
                map.put("userId", id);
                map.put("roleId", roleId);
                userDao.setUserAndRole(map);
            }
        }
    }


    public User findById(Integer id) {
        User byId = userDao.findById(id);
        String password = byId.getPassword();

        return byId;
    }

    //分页查询所有用户
    public PageResult findPage(QueryPageBean queryPageBean) {
        String queryString = queryPageBean.getQueryString();
        Integer currentPage = queryPageBean.getCurrentPage();
        Integer pageSize = queryPageBean.getPageSize();
        PageHelper.startPage(currentPage, pageSize);
        Page<User> page = userDao.findPage(queryString);
        long total = page.getTotal();
        List<User> result = page.getResult();
        return new PageResult(total, result);
    }


    public void edit(User user, Integer[] roleIds) {

        userDao.edit(user);
        Integer id = user.getId();
        userDao.deleteUserIdAndRoleId(id);
        if (roleIds != null && roleIds.length > 0) {
            for (Integer roleId : roleIds) {
                Map<String, Object> map = new HashMap<>();
                map.put("userId", id);
                map.put("roleId", roleId);
                userDao.setUserAndRole(map);
            }
        }
    }

    public void deleteById(Integer userId) {
        userDao.deleteUserIdAndRoleId(userId);
        userDao.deleteUserById(userId);

    }
}
